#app2 .tab-bar{
    border: 1px solid black;
    display: flex;
}
#app2 .tab-bar li{
    width: 50%;
    border: 1px solid black;
}

#app2 .tab-content>li{
    display: none;
}
#app2 .tab-bar>li.selected{
    background-color: pink;
}

#app2 .tab-content>li.active{
    display: block;
}
